WATCH: Overcoming The Congo's Battle Against The Deadly Sleeping Sickness

HuffPost traveled to Congo to document efforts to fight this deadly disease.

This article is part of HuffPost's Project Zero campaign, a yearlong series on neglected tropical diseases and efforts to fight them.

"Out of Sight" is a series of 360-degree films telling the stories of the victims and the health workers battling neglected tropical diseases in some of the most remote and underdeveloped regions of Nigeria and Congo. The series explores efforts to eliminate three of those diseases, the challenges and the progress.

Sleeping sickness, the focus of this film, was once a major cause of mortality in tropical Africa but now may be nearly eliminated, thanks to the intervention of health workers and national health programs. As many as 80 percent of the remaining cases are found in Congo, where this was filmed.

To watch this 360-degree film on your desktop, make the video player (above) fullscreen; then click and drag to change the camera angle. If viewing on a mobile device, tap and drag your finger to explore the scene.

This series is supported, in part, by funding from the Bill & Melinda Gates Foundation. All content is editorially independent, with no influence or input from the foundation.

If you'd like to contribute a post to the series, send an email to ProjectZero@huffingtonpost.com. And follow the conversation on social media by using the hashtag #ProjectZero.